I've done some searches on this and haven't found a way to do this within Maya. If this really isn't built into Maya it's a disgrace. Thanks in advance if you can tell me how to do it, or what plugin I need to install that's compatible with with Maya 12 x64.
Scale a bit, undo, then check the script output, and you can enter your specific numbers. Yes maybe something like this should be built in, but learn to check the script output for a number of things in Maya, even learn a bit of Mel it will help you in the long run. polyEditUV -pu 0 -pv 0 -su 1.5 -sv 1.5
Really old post, but this is supported in Maya for anyone dropping in here hoping to find an answer. In the UV window, select your UVs, select the scale tool ("e"), select relative transform mode (0.0/red arrow icon among the copy/paste icons section), and enter the scale value in the upper right corner in either the U or…